*The only censorship that is explicitly disallowed by the US Constitution is censorship of opinion by the US Government, and all state and local governments who adhere to it. This is why public property is uncensored, save for the obvious (and Supreme Court established) libel/slander, and inciting panic by fraud (e.g. shouting "Fire!" in a crowded room)

I wonder if that's why we have obelisks ( phallic symbols ) for monuments  i.e Washington monument  and statues of women showing their boobies on public property and government buildings?